A novel Bézier micro-lens arrays for UVC LED panels to enhance public lift sterilization

Materials & Design, Год журнала: 2025, Номер unknown, С. 114178 - 114178

Опубликована: Июнь 1, 2025

Язык: Английский

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Oxygen Effect on the Ultraviolet-C Photochemistry of Lactic Acid

The Journal of Physical Chemistry A, Год журнала: 2023, Номер 127(13), С. 2936 - 2945

Опубликована: Март 24, 2023

Lactic acid, a small α-hydroxyacid, is ubiquitous in both indoor and outdoor environments. Recently, the photochemistry of lactic acid has garnered interest among abiotic organic chemistry community as it would have been present settings photoactive with high-energy solar radiation that available low oxygen early Earth environment. Additionally, we propose relevant to modern during ultraviolet-C (UVC) sterilization procedures emitted by humans thus prevalent environments where UVC increasingly being used. Here, study effect on gas phase photolysis using Fourier-transform infrared (FTIR) spectroscopy isotopically labeled (18O2). We find major products are CO2, CO, acetaldehyde, acetic acid. Furthermore, these same or without added oxygen, but partial pressures produced acetaldehyde increase amount oxygen. Notably, primarily incorporated into CO2 while little none acetaldehyde. combine results presented here those literature mechanism for role this mechanism. Finally, compare output krypton-chloride excimer lamp (λ = 222 nm), one lamps proposed procedures, absorption show be use aqueous previously published assess potential byproducts from reactions procedures.

Язык: Английский

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Medical Disinfection Robots: Past vs Future. Improving the Disinfection Process by Using Disinfection Robots with Folding Mechanism

Опубликована: Июнь 9, 2023

Nowadays, most disinfection robots have a bulky design or large dimensions, making it harder for them to operate in small, tight and narrow spaces from the medical environment other facilities. The solution disinfecting hard-to-reach areas is use with folding mechanism. They can different configurations, easier access where space limited. More specifically, their folded position (minimum position) be used disinfect area under hospital beds, which known reservoir of infectious agents, while extended (maximum general disinfection. paper presents characteristics currently available how using mechanism would overcome limitations improve overall quality efficiency process.

Язык: Английский

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Development of Far-UVC-Based Surface Disinfection Prototype for Public Buses

Applied Sciences, Год журнала: 2023, Номер 13(14), С. 8501 - 8501

Опубликована: Июль 23, 2023

This paper presents a prototype of disinfection system for public transport specifically aiming to disinfect surfaces contaminated with the SARS-CoV-2 virus on buses using 222 nm wavelength far-ultraviolet light (far-UVC). Our study involved testing developed technical installed in 12 m long M3 category urban bus, an investigation optimal far-UVC angles, and determination parameters bus seat disinfection. The identified ideal positioning source effective analyzed three scenarios, considering zone coverage, time, energy demand. A subsystem employing real-time occupancy monitoring enhances process crowded areas buses. An efficiency assessment model is proposed optimizing consumption. Furthermore, consumption analyses different scenarios provide valuable insights usage

Язык: Английский

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Performance of an Autonomous Sanitary Sterilisation Ultraviolet Machine (ASSUM) on terminal disinfection of surgical theaters and rooms of an intensive-intermediate care unit

Infection Prevention in Practice, Год журнала: 2024, Номер 6(4), С. 100396 - 100396

Опубликована: Авг. 29, 2024

Ultraviolet- C (UV-C) light is effective for reducing environmental bioburden in hospitals, and the use of robots to deliver it may be advantageous.

Язык: Английский

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